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Recently, a giant spin splitting has been observed in surface alloys on noble metal (111) surfaces as a result of a strong structural modification at the surface as well as the large atomic spin-orbit interaction (SOI) of the alloy atoms.…

材料科学 · 物理学 2015-05-20 Isabella Gierz , Fabian Meier , J. Hugo Dil , Klaus Kern , Christian R. Ast

Two-dimensional (2D) ferroelectric materials provide a promising platform for the electrical control of quantum states. In particular, due to their 2D nature, they are suitable for influencing the quantum states of deposited molecules via…

The properties of Shockley-type interface states between $\pi$-conjugated organic molecular layers and metal surfaces are investigated by time-resolved two-photon photoemission experiments and density functional theory. For perylene- and…

其他凝聚态物理 · 物理学 2015-05-28 M. Marks , N. L. Zaitsev , B. Schmidt , C. H. Schwalb , A. Schöll , I. A. Nechaev , P. M. Echenique , E. V. Chulkov , U. Höfer

The continuous reduction of magnetic units to ultra small length scales inspires efforts to look for a suitable means of controlling magnetic states. In this study we show two surface charge alteration techniques for tuning the interlayer…

介观与纳米尺度物理 · 物理学 2015-09-02 Tamene R. Dasa , Valeri S. Stepanyuk

We demonstrate the application of orbital k-space tomography for the analysis of the bonding occurring at metal-organic interfaces. Using angle-resolved photoelectron spectroscopy (ARPES), we probe the spatial structure of the highest…

材料科学 · 物理学 2015-05-18 J. Ziroff , F. Forster , A. Scholl , P. Puschnig , F. Reinert

Spin-orbit coupling (SOC) lifts molecular orbital degeneracy, enabling bi-level electronic platforms suitable for next-generation digital devices. However, common light-atom molecular feedstocks exhibit weak SOC due to the absence of heavy…

材料科学 · 物理学 2025-05-07 Zihao Wang , Wan-Lu Li , Shaowei Li

Atoms at liquid metal surfaces are known to form layers parallel to the surface. We analyze the two-dimensional arrangement of atoms within such layers at the surface of liquid sodium, using ab initio molecular dynamics (MD) simulations…

材料科学 · 物理学 2009-11-13 Brent Walker , Nicola Marzari , Carla Molteni

We study the adsorption geometry of 3,4,9,10-perylene-tetracarboxylic-dianhydride (PTCDA) on Ag(111) and Cu(111) using X-ray standing waves. The element-specific analysis shows that the carbon core of the molecule adsorbs in a planar…

材料科学 · 物理学 2011-04-13 A. Gerlach , S. Sellner , F. Schreiber , N. Koch , J. Zegenhagen

We present a comparative study of metal-organic interface properties obtained from dispersion corrected density functional theory calculations based on two different approaches: the periodic slab supercell technique and cluster models with…

Surface alloys are highly flexible materials for tailoring the spin-dependent properties of surfaces. Here, we study the spin-dependent band structure of a DyAg$_2$ surface alloy formed on an Ag(111) crystal. We find a significant exchange…

The chemical bonding of adsorbate molecules on transition-metal surfaces is strongly influenced by the hybridization between the molecular orbitals and the metal d-band. The strength of this interaction is often correlated with the location…

材料科学 · 物理学 2015-10-20 Xiangshi Yin , Valentino R. Cooper , Hanno H. Weitering , Paul C. Snijders

A key to building functional devices on the basis of single molecule magnets in the framework of molecular electronics is the ability to deposit and study these molecules on a surface, because the structural, electronic and magnetic…

介观与纳米尺度物理 · 物理学 2016-01-26 Judith Donner , Jan-Philipp Broschinski , Bastian Feldscher , Anja Stammler , Hartmut Bögge , Thorsten Glaser , Daniel Wegner

Adsorption of small amphiphilic molecules occurs in various biological and technological processes, sometimes desired, the other times unwanted (e.g., contamination). Surface-active molecules preferentially bind to interfaces and affect…

软凝聚态物质 · 物理学 2022-11-24 Fabio Staniscia , Horacio V. Guzman , Matej Kanduč

The interface between a ferromagnetic metal and an organic molecular semiconductor, commonly referred to as a spinterface, is an important component for advancing spintronic technologies. Hybridization of the ferromagnetic-metal surface d…

We investigated the bond, electronic and magnetic behavior of adsorption Yttrium atoms on Lithium (110) surface using a combination of Bond-order-length-strength(BOLS) correlation and density-functional theory(DFT). We found that adsorption…

材料科学 · 物理学 2018-12-26 Maolin Bo , Li Lei , Chuang Yao , Zhongkai Huang , Cheng Peng , Chang Q. Sun

Molecular self-assembly has been extensively used for surface modification of metals and oxides for a variety of applications, including molecular and organic electronics. One of the goals of this research is to learn how the electronic…

材料科学 · 物理学 2009-11-13 M. F. Calhoun , J. Sanchez , D. Olaya , M. E. Gershenson , V. Podzorov*

In this letter we propose an experiment to measure the Kondo effect for magnetic atoms adsorbed on the surface of a metallic nanowire. In addition to the traditional sp-d hybridization, by introducing the strong electromagnetic field of the…

介观与纳米尺度物理 · 物理学 2007-05-23 Ren-Shou Huang , Yia-Chung Chang

Molecular functionalization of nanoparticles and metallic substrates can be used to tune their properties for specific applications. However, polycrystalline substrates and nanoparticles exhibit surface planes with distinct crystallographic…

The formation of hydrogen-bonded organic nano-structures and the role of the substrate lattice thereby were investigated by scanning tunneling microscopy. The self-organization of 5,10,15,20-tetra(p-hydroxyphenyl)porphyrin (H2THPP)…

Controlling interfacial interactions in magnetic/topological insulator heterostructures is a major challenge for the emergence of novel spin-dependent electronic phenomena. As for any rational design of heterostructures that rely on…